RockWoofSketch map
Woof’s favorite find
Crystal Hill Deposit
We picked it because its USGS record mentions 1 gem or collectible mineral (Quartz) and 1 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as occurrence for Quartz. Minerals mentioned: Quartz. Approx. location 42.606, -73.774. USGS record.
Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.
Field cards: what kind of sites?
Was producing when the record was made.
The mineral was noted here, without development.
Status terms come from USGS MRDS records.
Mineral cards
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
1 site
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
No individual minerals are listed in these records.
Commodities
Flagstone 4Bloating Material 1Sulfur 1Quartz 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Cohoes | Bloating Material | — | Producer | 42.766, -73.712 |
| New Salem Deposit | Sulfur | — | Occurrence | 42.615, -73.968 |
| Heldeberg Bluestone Quarry & Mill | Flagstone | — | Producer | 42.619, -74.113 |
| Grippee Quarry | Flagstone | — | Producer | 42.591, -74.092 |
| Alcove Quarry | Flagstone | — | Producer | 42.467, -73.800 |
| Crystal Hill Deposit | Quartz | — | Occurrence | 42.606, -73.774 |
| Knox Quarry | Flagstone | — | Producer | 42.673, -74.108 |
Fossil collections
The Paleobiology Database lists 14 fossil collection records in Albany County. These are research records, not public dig sites.
Nearby counties
Schoharie County · Greene County · Montgomery County · Columbia County · Fulton County
New York mineral guides
- Quartz in New York
- Garnet in New York
- Mica in New York
- Feldspar in New York
- Magnetite in New York
- Pyrite in New York
Back to all New York counties.
How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.
Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.
Updated